V形墩连续刚构桥结构设计与分析

Structural Design and Analysis of a V-Shaped Pier Continuous Rigid Frame Bridge

为了研究V形墩连续刚构桥各个设计参数对V形墩的力学性能影响,以实桥设计为工程背景,采用参数分析方法,建立MIDAS有限元分析模型,并讨论荷载形式、V形墩倾角和尺寸等对桥梁受力状态的影响.结果表明,V形墩的设计参数对整体结构的影响很大,其中活载产生的效应比重最大;V形墩倾角和尺寸是影响桥梁力学性能的主要因素,对墩身的弯矩效应影响较大,轴力效应影响较小.

This paper aims to study influences of design parameters of a V-shaped pier continuous rigid frame bridge on the mechanical properties of V-piers. A finite element analysis model for MIDAS is established by using parameter analysis method. What was researched also involve the impacts of load form, V-shaped pier angle and size on the structure of the force state. The results show that design parameters of the V-shaped pier have great influence on the whole structure, and that of the live load is the largest. The size and inclination of the pier are the main factors affecting the mechanical performance of the main beam, thus producing considerable impact on bending moment of the pier. And axial effect is less significant.